Rolling- mill



2 Sheets-Sheet 1.

(No Model.)

H. SACK.

ROLLING MILL.

ted June 21,1887.

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2 Sheets-Sheet 2. H. SACK.

ROLLING MILL.

(No Model.)

No. 365,100. Patented June 21, 1887.

s ./L I I UNITED STATES PATENT OFFICE.

HUGO SACK, OF DUISBURG, GERMANY.

ROLLING-MILL.

ESPECIPICATION forming part of Letters Patent No. 365,100, dated June 21, 1887.

Application filed Septcmberll, 1886. Serial No. 213,489. (No model.)

.To all whom it may concern: I

Be itk nown that I, HUGO SAOK,OfDl1lSbU rg, German Empire, have invented an Improve ment in RollingMills, of which the following is a specification.

This invention more particularly relates to the rolling of beams having double flanges at top and bottom; and it consists in the combination of horizontal rolls with vertical rolls, so constructed that the proper pressure shall be exerted upon the material in everysection during the operation to produce an equal extension of the metal and increase thereby the strength of the beam thus rolled.

The invention consists of thcimprovemcnls hereinafter described.

In the accompanying drawings, Figures 1 and 2 represent front views of part of the rolls in various positions of the operation, partly in section. Figs. 8 and 4 show part of the rolls in section on an enlarged scale.

A A are the horizontal rolls having sun faces a, I), and 0, corresponding with the inner surfaces of the beam to be rolled. At the inner end of the surface I) a recess, (1, is made in said rolls, and from the inner end of the surface 0 an ontwardlyinclinod surface, c,is arranged on said rolls. Between these rolls A A wheels I and C are placed on vertical shafts or axles n. The outer periphery, (l, of the wheel 13 is made slightly convex, with the adjoining upper and lower surfaces, 0', of the wheel inclined inwardly corresponding with the outwardly-inclined surfaces 0 of the rolls A. The periphery b of the wheel 0 is made likewise slightly convex, and on the upper and lower ends of this convex part projections or flanges d are arranged corresponding in shape with the recesses (I, made on the rolls A.

The rolls A A are operated by the usual gearing, (not shown in the drawings) while the wheels B 0 turn freely in their bearings, and are rotated by friction during the passing of the beam underopcration between the same.

The bearings for the axles it (not shown in the drawings) retain the rolls B 0 always in the same plane, but allow the rolls to be moved toward each other.

Fig. 1 represents the position of the rolls and wheels to each other at the beginning of the operation upon the beam, and Fig.2shows the position of the same at the end of the operation. Y

The dotted line in Fig. 1 indicates about the section of the bar rolled by preparative rolls. The horizontal rolls A A are during the operation gradually moved toward each other until they come into the position shown in Fig. 2, equal to the thickness of the finished web of the beam. The wheel B is first, or quicker than the wheel 0, moved toward the center to exert a side pressure upon one of the end parts or flanges of the beam, so as to compress and extend the same upward and downward. After the beam has passed once through the rolls the same is turned one hundred and eighty degrees around, so that the previously acted upon flange partof the beam comesinto the position to be acted upon by the wheel 0, where the projecting parts or flanges are further extended by the action of this wheel 0, being moved toward the center, the outer end of the flanges of the beam being formed by the flanges (1 cl on this wheel 0. This operation of turning the beam operated upon one hundred and eighty degrees around after each passage through the rolls is repeated until the rolls A A and wheels 13 and C have arrived in the position shown in Fig. 2, when the rolls A A have been moved together to correspond with the required thickness of the web of the beam and the wheels 13 and C have been moved inwardly or toward the center, so that the end flanges of the beam have been equally stretched out and shaped to the desired form both alike. Bythis arrangement of rolls A A and wheels B and G the beam will receive an equal compressing or stretching operation in its web, as well as in its flanged part, whereby the strength of the same will be considerably increased. \Vhen this operation is completed, the thus rolled beam may be pressed between finishing-rolls to straighten or square the end flanges, if desired.

hat I claim is- 1. In a mill for rolling beams with double flanges, the combination of a pair of horizontal rolls, A A, each having working faces cbc, the end of the face a connecting with an outwardly-inclined surface, 0, and the end of the face b connecting with a recess, (7, and the vertical wheels B G, the wheel B having a slightly convex periphery, O, with inwardly-inclined surfaces e e, and the wheel 0 having a slightlyconvex periphery, b, with projections or flanges d d at each end, arranged to operate in the manner and for the purpose substantiall; as described.

2. In a mill for rolling beams with double flanges, the combination of a pair of horizontal rolls, A A, with vertical rolls B and O, the working-surfaces of the rolls A A terminating at one side in outwardly-inclined surfaces 6,

, subscribing witnesses;

overlapping the inwardly-inclined surfaces 6 of the wheel B, and at the other side connecting with recesses d, to receive the projections or flanges d of the wheel 0, substantially as described.

In testimony whereofl have signed my name to this specification in the presence of two 

